EP 2778044 A1 20140917 - Cavity acoustic tones suppression
Title (en)
Cavity acoustic tones suppression
Title (de)
Unterdrückung von akustischen Hohlraumtönen
Title (fr)
Suppression de tonalités acoustiques de cavité
Publication
Application
Priority
EP 13275066 A 20130315
Abstract (en)
A cavity system that tends to increase the thickness (28) of the shear layer (22), comprising: a cavity (2) and a plate (104); the plate (104) comprising a plurality of holes (4) through it, wherein the proportion of the area of the plate (104) taken up by the holes is ‰¥ 60%, for example ‰¥ 75% or ‰¥ 90%; the plate (104) being positioned in the proximity of a leading edge (14) of the cavity (2); the surface of the plate (104) at a perpendicular or oblique angle to the actual or intended flow direction (6). The plate (104) may be positioned at an oblique angle to the flow direction (6). One or more flow alteration elements, for example elongate members (34) positioned across the holes and/or members (38) positioned directly behind or in front of the holes (4).
IPC 8 full level
B64C 21/02 (2006.01)
CPC (source: EP)
B64C 23/005 (2013.01); B64C 2025/003 (2013.01); B64C 2230/08 (2013.01); Y02T 50/10 (2013.01)
Citation (search report)
- [XI] DE 102005007940 A1 20060824 - MTU AERO ENGINES GMBH [DE]
- [XI] US 2663993 A 19531229 - MOSSER JAMES K
- [XI] US 2009045286 A1 20090219 - KING MICHAEL J [US], et al
- [XI] GB 614274 A 19481213 - ALBERT GEORGE ELLIOTT
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 13275066 A 20130315